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Littelfuse delivers vital products to address customer needs for protecting and safely controlling electrical power. Our single-function & control relays product portfolio includes six series of time-delay relays engineered specifically to control the flow of electricity to compressors in air conditioners, heat pumps, and refrigeration units. These relays help increase the lifespan of equipment by preventing damage caused by rapid compressor cycling. Options include relays with solid-state circuitry and relays with delay-on-make/delay-on-break operation.
- Ac input voltages from 24 V ac to 230 V ac
- Dc input voltages of 12 V dc or 24 V dc
- Fixed or selectable time delays from 1.5 s to 1230 s
- Operate at temperatures from –40 °C to +85 °C
- Initiate times below 16 ms
- Ac line frequency/Dc ripple of 50/60 Hz with accuracy within 20 %
- UL Listed or UL Recognized
- Lockout delays prevent rapid recycling of compressors
- Available with fully encapsulated circuitry
HVAC Parts
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Filters
HVAC Applications
- Compressors
- Small electric motors
